Does this sound like your story? You see pop-up ads from offer.bestprizestowin.com appearing in a new tab while browsing web sites that generally don’t advertise in pop-ups. The pop-ups manage to escape the built-in pop-up blockers in Firefox, Chrome, Internet Explorer or Safari. Maybe the offer.bestprizestowin.com pop-ups appear when clicking search results from Google? Or does the pop-ups appear even when you’re not browsing?

Here is how the offer.bestprizestowin.com ad looked like on my computer:

If this description sounds like your experience, you probably have some adware installed on your computer that pops up the offer.bestprizestowin.com ads. So don’t send angry emails to the web site you were browsing, the ads are most likely not coming from them, but from the adware on your system. I’ll do my best to help you with the offer.bestprizestowin.com removal in this blog post.

For those that are new to the blog: Not long ago I dedicated a few of my lab systems and deliberately installed a few adware programs on them. Since then I have been tracking the behaviour on these machines to see what kinds of advertisements that are displayed. I’m also looking on other interesting things such as if the adware updates itself, or if it downloads additional unwanted software on the machines. I first spotted the offer.bestprizestowin.com pop-up on one of these lab machines.

offer.bestprizestowin.com resolves to the 54.210.134.107 address. offer.bestprizestowin.com was registered on 2014-11-10.

So, how do you remove the offer.bestprizestowin.com pop-up ads? On the machine where I got the offer.bestprizestowin.com ads I had MedPlayerNewVersion, Movie Wizard and istartsurf installed. I removed them with FreeFixer and that stopped the offer.bestprizestowin.com pop-ups and all the other ads I was getting in Mozilla Firefox.

The issue with pop-ups such as this one is that it can be popped up by many variants of adware, not just the adware on my system. This makes it impossible to say exactly what you need to remove to stop the pop-ups.

Anyway, here’s my suggestion for the offer.bestprizestowin.com ads removal:

1. What software do you have installed if you look in the Add/Remove programs dialog in the Windows Control Panel? Something that you don’t remember installing yourself or that was recently installed?
2. You can also examine the browser add-ons. Same thing here, do you see something that you don’t remember installing?
3. If that didn’t help, you can give FreeFixer a try. FreeFixer is built to assist users when manually tracking down adware and other types of unwanted software. It is a freeware utility that I’ve been working since 2006 and it scans your system at lots of locations where unwanted software is known to hook into your system. If you would like to get additional details about a file in FreeFixer’s scan result, you can just click the More Info link for that file and a web page with a VirusTotal report will open up, which can be very useful to determine if the file is safe or malware:

   

Here’s a video tutorial which shows FreeFixer in action removing adware that caused pop-up ads:

Did this blog post help you to remove the offer.bestprizestowin.com pop-up ads? Please let me know or how I can improve this blog post.

Thank you!